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v3.23.1

Other investments (Details) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Oct. 31, 2022 JPY (¥) | Jun. 30, 2020 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Other investments (Details) [Line Items] |  |  |  |  |
Investment cash consideration |  |  | $ 3 |  | $ 33,126
Fair value gain from investment |  |  | (12,958) | (12,363) | $ 4,909
Exchange market (in Yen) | ¥ | ¥ 364,148 |  |  |  |
Investment Fund One [Member] |  |  |  |  |
Other investments (Details) [Line Items] |  |  |  |  |
Investment cash consideration |  | $ 15,000 | 7,044 |  |
Investment fund redemption notice period |  | 1 month |  |  |
Fair value gain from investment |  |  | 5,543 | 6,598 |
Investment Fund Two [Member] |  |  |  |  |
Other investments (Details) [Line Items] |  |  |  |  |
Investment cash consideration |  | $ 17,100 | 4,643 |  |
Investment fund redemption period |  | 3 years |  |  |
Fair value loss from investment |  |  | $ 7,415 | $ 5,766 |

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